CAJ | 학술논문

吊杆索力控制对拱桥结构的安全性和可靠度有很大的影响，是拱桥施工的难点问题。根据一定的张拉顺序，通过M ID A S软件建立有限元模型得到所需的吊杆索力样本库。以成桥设计索力作为径向基函数法（RB F法）的输入向量，所求的初始索力为输出向量。利用分布密度参数控制求解精度，逼近两者之间的非线性映射关系，直接计算出吊杆初索力。研究表明：BRF法可以将索力的计算值与设计值之间的误差控制在5％以内，满足工程要求。
조간색력공제대공교결구적안전성화가고도유흔대적영향，시공교시공적난점문제。근거일정적장랍순서，통과M ID A S연건건립유한원모형득도소수적조간색력양본고。이성교설계색력작위경향기함수법（RB F법）적수입향량，소구적초시색력위수출향량。이용분포밀도삼수공제구해정도，핍근량자지간적비선성영사관계，직접계산출조간초색력。연구표명：BRF법가이장색력적계산치여설계치지간적오차공제재5％이내，만족공정요구。
Cable tension control has a great influence on security and reliability of tie ‐ arch bridge ,which is the key problem of arch bridge construction .Based on a certain tension sequence ,a whole bridge model was established through software MIDAS ,so that the required sample database of the cable tension were obtained .This method adopted the finally designed cable tension as input vector and the calculated initial value as output vector .Distribution density parameter was used to control the accuracy of solution ,then approximate to the nonlinear relationship between input and output ,finally to calculate the initial cable tension directly .The results showed that the precision can be controlled within 5% by RBF method ,and thus satisfy the engineering requirements .